:root {
  color-scheme: light dark;
  --background: #ffffff;
  --text: #1d1d1f;
  --muted: #6e6e73;
  --line: rgba(0, 0, 0, 0.1);
  --button: rgba(0, 0, 0, 0.06);
  --button-hover: rgba(0, 0, 0, 0.1);
  --accent: #0071e3;
  --accent-hover: #0077ed;
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: #111112;
    --text: #f5f5f7;
    --muted: #98989d;
    --line: rgba(255, 255, 255, 0.12);
    --button: rgba(255, 255, 255, 0.14);
    --button-hover: rgba(255, 255, 255, 0.2);
    --accent: #0a84ff;
    --accent-hover: #2997ff;
  }
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  display: flex;
  flex-direction: column;
  width: min(100%, 880px);
  min-height: 100dvh;
  margin: 0 auto;
  padding: 0 24px;
  color: var(--text);
  font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--background);
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.site-header {
  padding: 28px 0;
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.apps {
  flex: 1;
  border-top: 1px solid var(--line);
}

.app {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
}

.app img {
  flex: none;
  display: block;
  width: 72px;
  height: 72px;
  filter: drop-shadow(0 1px 3px rgba(0, 0, 0, 0.2));
}

.app-text { flex: 1; min-width: 0; }

h2 { font-size: 20px; font-weight: 600; letter-spacing: -0.01em; line-height: 1.3; }
h2 a:hover { color: var(--accent); }

.app-text p { margin-top: 2px; color: var(--muted); }

.app-actions { flex: none; display: flex; gap: 8px; }

.button {
  padding: 7px 14px;
  font-size: 14px;
  font-weight: 500;
  white-space: nowrap;
  background: var(--button);
  border-radius: 999px;
  box-shadow: inset 0 0 0 1px var(--line);
}

.button:hover { background: var(--button-hover); }
.button.primary { color: #fff; background: var(--accent); box-shadow: none; }
.button.primary:hover { background: var(--accent-hover); }

.doc {
  flex: 1;
  padding: 36px 0 56px;
  border-top: 1px solid var(--line);
}

.doc > * { max-width: 640px; }
.doc h1 { font-size: 32px; font-weight: 600; letter-spacing: -0.02em; line-height: 1.2; }
.doc time { display: block; margin: 6px 0 24px; color: var(--muted); font-size: 13px; }
.doc h2 { margin: 28px 0 6px; font-size: 16px; }
.doc p + p { margin-top: 10px; }
.doc strong { font-weight: 600; }
.doc a { color: var(--accent); }
.doc a:hover { text-decoration: underline; }

.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 24px;
  padding: 28px 0;
  color: var(--muted);
  font-size: 13px;
}

.site-footer nav { display: flex; flex-wrap: wrap; gap: 8px 20px; }
.site-footer a:hover { color: var(--text); }

@media (max-width: 640px) {
  .app { flex-wrap: wrap; }
  .app-text { flex-basis: calc(100% - 92px); }
  .app-actions { width: 100%; }
  .app-actions .button { flex: 1; text-align: center; }
}